My mother tells me that when I was 3 years old there used to be a problem in our apartment. The ceiling in the bathroom was often wet and she couldn’t figure out why.
One day she was in the bathroom, I was there with her, and she wondered out loud “Why is the ceiling in the bathroom always so wet?” Apparently, according to her, I said “I show you mommy,” and I walked up to the sink.
I turned on the tap and I put my finger under the nozzle so that the water was directed upward. It sprayed all over the ceiling.
I have no memory whatsoever of this incident. However I did grow up to be a scientist.